DNA and RNA structure Flashcards
(17 cards)
genetics
the study of heredity and the variation of inherited characteristics
genome
is an organisms complete set of DNA including its genes
gene
a sequence of nucleotides that codes for the synthesis of a protein
what is the subunit of a nucleic acid called
nucleotide
name two purines
Adenine and guanine
draw a simple diagram of the structure of DNA showing a triplet
in copy
explain what is meant by the base pair unit
adenine and thymine cytosine and guanine
what type of bond exists between two complementary bases in a DNA molecule
hydrogen bond
state three differences between DNA and RNA
DNA RNA
double strand single stranded
deoxyribose sugar ribose sugar
contains thymine uracil
Name a type of specimen that contains only one type of nucleic acid
Viruses
Name two locations within the cell in which RNA is found but not DNA
Cytosol and ribosomes
2019 11a
name the sugar present in DNA
other than the sugar give two structural differences in DNA and RNA
Deoxyribose
DNA RNA
double strand single stranded
contains thymine uracil
2015 7a
what is the chemical composition of a chromosome
what is meant but the term non coding DNA
DNA and protein
Non - coding DNA
2012 10a
name the two nitrogenous bases in DNA
give both of the specific base pairs found in DNA structure
two purines (adenine and guanine) and two pyrimidines (cytosine and thymine)
adenine thymine
guanine cytosine
how are the two strands of DNA molecules joined together
what is junk DNA
HYDROGEN BONDS
non coding DNA
2010 10a
name the base that pairs with cytosine in DNA
guanine
2008 14 b
draw DNA
Where may vary from nucleotide to nucleotide
The genetic code is contained within the DNA of chromosomes. Briefly describe the nature of this code.
Name a cell organelle, apart from the nucleus, in which DNA is found.
Base
three bases in sequence codes for protein
Mitochondrion or chloroplast
